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TWO-STAGE OIL SEALED ROTARY VANE 2 1 Innovative magnetically coupled drive Proven, robust design 4 3 Hermetically sealed – no possibility of process gas contaminating the lubricating oil Environmentally friendly – No oil leaks 6 5 Integrated gas ballast and safety valve No shaft seal maintenance 8 7 Three-phase motor (35 – 255 m3/hr) Single-phase motor (1.5 – 11 m3/hr) 10 9 Low maintenance costs Low operating costs 12 11 Wide range of accessories Corrosive gas version available (MC-models) https://www.west-technology.co.uk/vacuum/sales/vacuum-pumps/